Signal for motor-vehicles



ms. HALL SlGNAL FOR MOTOR VEHICLES. APPLICATION FIILED OCT-1B. 1920.

Patented June 21, 1921.

' aperture to limit the rotation of the blade UNITED STATES PATENT OFFICE.

- ROBERT SJHA L, ornnrnomymrorrrean.-

. SIGNAL ron ivroron-vnirictns.

zen of the United States of America, residing at Detroit, in the county of Wayneand State;

upon motor vehiclesQIt is an obj e'ctof the inventionto provide a signal which isfsim'ple in construction and sensitive in Operation, and which will automatically indicate to the driver of a following vehicle change in speed of the vehicle upon which it is mounted. Other objects of the invention reside in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings; 7

Figure 1 is a sectional elevation of a signal embodying my invention and applied to a vehicle;

big. 2 is a side elevation of the signal showing its manner of attachment to the vehicle;

Fig. 3 is a perspective view of the signal.

-1 is a rod forming a pivotal support for the indicating blade 2 which is provided at its lower end with the transversely extending flange 3 carrying the weight 4:. The rod 1 passes through the aperture 5 in the flange 3 and through the aperture 6 in a second flange 7 near the upper end of the blade, while the upper end of the rod 1,'

which is preferably pointed as at 8, contacts with a third flange 9 upon the blade. This pointed upper end 8 of the rod is free to find its seat upon the third flange and consequently reduces to the minimum the friction to rotation since it cannot bind. The flanges 7 and 9 are struck out from the blade 2, which is preferably formed of sheet metal, to form the aperture 10 therein and a stop 11 upon the rod 1 which is formed by a pin passing therethrough, extends through the relative to the rod to substantially 90.

The lower end of the supporting rodl is threaded and is adapted to be engaged by the nuts 12 and 13 so that to attach the signal to a vehicle the rod may be passed through an aperture in the desired part of the vehicle, such as the fender 14, and the c c to signalsl for vehicles and is designed particularly for use Specification or Lcttersllfatent. -Pate te June 21 1921.; a utati'mi'jfiieii' oi'otle fis, liar). seal to. 4 7,553.

nuts 12 and mines screwed toward each vehicle and'adj acent tothe body 15thereof so that bothsides .of th'eblade 2 may havethe same color, asred, without interfering with 1 the indicating functions; The supporting rod 1 is bent rearwardly between the fender and the blad'e t'o the' desired angle. and the stop 11 is adapted to engageoneedge of theaperture 10 in the bladeto hold the blade parallel to the direction of travel olf the vehicle when the parts ar in u eirnermal positions, but upon retardation of the speed of the vehicle, the indicating blade will be rotated due to the inertia of the weight 4 until the blade occupies the position shown in dotted lines in Fig. 1 where the opposite edge of the aperture 10 is engaged by the stop and the blade extends transversely of the direction of travel of the vehicle to plainly indicate to the driver of the following vehicle that the vehicle upon which the signal is mounted is slowing down. i l

With the above construction the path of rotation of the indicating member is inclined to the horizontal to normally maintain the signal in its desired position, but at the same time permit of a high degree of sensitiveness of the signal and of the signal remaining exposed for a longer period of time than where a weighted member swings through a substantially vertical path. Furthermore, the signal comprises but few parts which can be readily and cheaply manufactured.

What I claim as my invention is:

1. In a signal for vehicles, the combination with a support, of an indicating member rotatably mounted on said support and normally occupying a predetermined position relative to said support, saidindicating member being unbalanced to rotate 3. Ina signal for vehicles, the combination with a supporting rod, of an indicating member pivotally mounted rupon 'said rod. with its pivot inclined relative to the verti-' cal, said indicating member being unbal-'.

anced to rotate -due to its inertia upon change of speed of the vehicle, and means.

for limiting the rotation of said indicat- 7 ing member.

4. In a signal for vehicles, the combination With'an upwardly extending rod,fof an" tion with an upwardly extending inclined supporting rod, of an apertured indicating blade; apertured flanges'upon said blade through which said rod passes; a flange upon said blade rotatably engaging the; upper end of said rod, a weight'upon one of said 7. movement of 'thelvehicle.

flanges offset from said rod to rotate about said rod due to inertia upon change of speed of the vehicle anda stop upon said rod and extending through the aperture in said blade tolimit the rot'ation of said blade.

6. In a signal for vehicles, the combina- 1 tion with an upwardly and rearwardly' ex tending supporting rod, an apertured indi- "cating blade, apertured flanges upon said blade through which said rod passes, a

flange upon said blade freely rotatably engaging the upper end of said rod, aweight upon one 01: said flanges oflset from said rod to rotate ther'eabout due to inertia upon retardation of the speed of the vehicle and a ;stop"upon said rod andextending through the aperture in said bladey'said stop nor- L mally'holding said blade parallel to the direction of movement of the vehicle and ar- 'ranged'to limit the rotation ofsaidblade to extend transversely of the direction of In testimony whereof I afiixm 3 ROBERT ;H

signature; 

